GDYT-10/50(10kVA/50kV AC) Partial Discharge Test System
General introduction
GDYT-10/50 Partial Discharge Test System is mainly used for testing frequency voltage insulation level of various insulation materials, insulation structure and electrical products, also as partial discharge frequency testing power supply for testing object such as transformer,mutual inductor and lightning arresters.It is widely used in electrical manufacturing,power operation departments, research institutes and universities.
GDYT System 10kVA/50kV composition
1. Hipot Test Control Box GDYD-10/50
2. PD-free Gas Type Transformer YDQW-10/50
3. Coupling Capacitor TAWF-800pF/80kV
4. Protective Resistor GR50kV
5. Isolation Filter LBQ-10kVA
6. Partial discharge detector(optional)
7. Other accessories
II.Specifications
System Specifications
Power supply: 230V±10%, 50Hz
Rated capacity: 10kVA
Outputvoltage: 50kV, current: 200mA
Short-circuit impedance: <18%
Operation time: 30mins@100% rated voltage and current.
Continuous working@ 2/3 rated voltage and current.
Wave form distortion rate:<3% when voltage regulator input voltage distortion rate <3%.
PD value:≤10pC @ 100% rated voltage
1. Control unit
Features
Digital display meters mounted on the panel.
MonitoringHV side voltage,HV side current,LV side current and indicator of zero,power, working start,timing.
Over-current protection,zero-starting protection,sound and light alarm.
With new type time relay,time rangeis more wider (1S ~ 99H).
Using the latest current relay, more accurate and reliable.
Specifications
Power: AC230V±10%,50Hz
Capacity: 10kVA
Output voltage: AC 0-250V
Rated output current: 50A
Rated current rectified range: 0-50A
HV voltmeter range:0-50kV
Accuracy: 3.0% of the reading±1digit(F.S)
HV ammeter range:0-200mA
Accuracy: 3.0% of the reading±1 digit(F.S)
LV ammeter range:0-50A
Accuracy: 2.0% of the reading±1 digit(F.S)
Timing range:1s-99h
2. PD-free Gas testing transformer (HV unit)
Rated capacity: 10kVA
Input voltage: 0-200V
Input current: AC 0-50A
Output voltage: AC 0-50kV
Output current: AC 200mA
Voltage accuracy: AC 1.5%
PC value on rated voltage: ≤10pc
Voltage distortion factor: <3%
Insulation dielectric: SF6 gas
Coupling capacitor
Rated frequency: 50Hz
Standard capacitance: 800pF±3%
Rated voltage: 50kV
Voltage ratio: 1000/1
Dielectric loss: <0.5%
Measurement accuracy: 1%
Permitted operation time: same with testing transformer
PD value: ≤10pc on 100% of rated voltage.
Protective resistor
Rated frequency: 50Hz
Rated voltage: 50kV
Resistance: 5.5kΩ
Rated current: 0.2A
Permitted operation time: same with testing transformer
5. Isolation filter
With L-C filter loop circuit, and built-in filter compensation device
Rated capacity: 10kVA
Rated voltage: 200V
Rated current: 50A
Frequency: 50Hz
Attenuation: 40kHz-100kHz ≥40dB
100kHz-1.5Mhz ≥60dB
Permitted operation time: same with testing transformer